document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211051>Question 211051</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can anyone help me with the below word problem.  Is it standard deviation?\r<BR>\n" );
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document.write( "The weights of the full-grown adult male South American tapir are normally distributed with a mean of 525 pounds and a standard deviation of 35 pounds. What is the probability that<BR>\n" );
document.write( "a) A randomly selected full-grown adult male tapir weighs at least 550 pounds?<BR>\n" );
document.write( "b) A randomly selected full-grown adult male tapir weighs less than 450 pounds? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159460 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=159460\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The weights of the full-grown adult male South American tapir are normally distributed with a mean of 525 pounds and a standard deviation of 35 pounds. What is the probability that<BR>\n" );
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document.write( "Comment: You either have to use a z-table or a calculator to get these<BR>\n" );
document.write( "answers.  I use a TI-84<BR>\n" );
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document.write( "a) A randomly selected full-grown adult male tapir weighs at least 550 pounds?<BR>\n" );
document.write( "Ans: 1 - normalcdf(0,550,525,35) = 0.2375<BR>\n" );
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document.write( "z(550)=(550-525)/35 = 0.714<BR>\n" );
document.write( "P(x>=550) = P(z>=0.714) = 0.2376\r<BR>\n" );
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document.write( "b) A randomly selected full-grown adult male tapir weighs less than 450 pounds?<BR>\n" );
document.write( "Ans: normalcdf(0,450,525,35) = 0.0161<BR>\n" );
document.write( "z(450)= (450-525)/35 = -2.143<BR>\n" );
document.write( "P(x<45) = P(z<-2.143) = 0.0161...<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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